Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected in early February 2002.
NYC-WTC_000175065–000175067
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Feb 05 02 11:54a PSC Rnalytical Services 6109219667 P- 4
INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING ■ EPA/NVLAP 101262-0 • NY DQHINELAC 10903 • NJ DEP 77020 ■ AIHA ACCREDITATION NO. 100439 ■ PA DEP 06-363 • CT DPH PH-0238 ■ NC DENR S99 Analytical Results ANALYTICAL SERVICES for ATC Associates WorkOrder: R0201O328 Client Reference: 19125-0246, Silica
Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ug) (mg/m’) ; (ppm) (ug)
Client ID; S13 ATC-OI 17-STY Lab fD: -13A Date Sampled: l/l7/02 Matrix: Filter AirVol.(L)sNA Total Particulate Matter <50.0 50 N0500 01/24/2002 ADM
Silica (Quartz Total) <10.0 10 AIRBORNE SILICA 01/24/2002 ADM
(a) Analysis indicates possible breakthrough; back section result is greater than 0% of the front section result.
General Notes: <: Less than the indicated limit of detection (LOD). —: Information not available or not applicable. Back sections were checked and showed no significant breakthrough.
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CONFIDENTIAL, CITY_21MC100_003429690 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175067
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NYC-WTC_000175789
Laboratory report page showing analytical results for silica samples collected by ATC Associates for the NYC Board of Education in December 2001.
4 shared non-person entities · 1 shared topics · similarity 0.987
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175781
Laboratory report page containing analytical results for air samples collected by ATC Associates for the NYC Board of Education.
4 shared non-person entities · 1 shared topics · similarity 0.986
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175063
Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected on December 7, 2001.
4 shared non-person entities · 1 shared topics · similarity 0.985
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.985
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175061
Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected in December 2001.
5 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗4 shared non-person entities · 1 shared topics · similarity 0.983
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175786
Laboratory report page containing analytical results for air samples collected by ATC Associates for the NYC Board of Education in May 2002.
4 shared non-person entities · 1 shared topics · similarity 0.983
machine-extracted · confidence unavailable · Check page ↗4 shared non-person entities · 1 shared topics · similarity 0.982
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175073
Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected in March 2002.
5 shared non-person entities · 1 shared topics · similarity 0.981
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NYC-WTC_000175073
Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected in March 2002.
Similarity score 0.990 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175781
Laboratory report page containing analytical results for air samples collected by ATC Associates for the NYC Board of Education.
Similarity score 0.989 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.989 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175061
Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected in December 2001.
Similarity score 0.989 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000177726
PSC Analytical Services results for dust samples collected at P.S. 89M on January 22, 2002.
Similarity score 0.988 (not a probability)
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NYC-WTC_000175789
Laboratory report page showing analytical results for silica samples collected by ATC Associates for the NYC Board of Education in December 2001.
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